return to home page Computational Chemistry Comparison and Benchmark DataBase Release 22 (May 2022) Standard Reference Database 101 National Institute of Standards and Technology
You are here: Calculated > Energy > Optimized > Energy

All results from a given calculation for CH3CHCH (1-propenyl radical)

using model chemistry: QCISD(T)/aug-cc-pVTZ

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 2A'
Energy calculated at QCISD(T)/aug-cc-pVTZ
 hartrees
Energy at 0K-117.003664
Energy at 298.15K-117.007659
HF Energy-116.472791
Nuclear repulsion energy64.154813
The energy at 298.15K was derived from the energy at 0K and an integrated heat capacity that used the calculated vibrational frequencies.
Vibrational Frequencies calculated at QCISD(T)/aug-cc-pVTZ
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
4/u)
Dep P Dep U
1 A' 3240 3132        
2 A' 3127 3024        
3 A' 3039 2938        
4 A' 3029 2929        
5 A' 1673 1618        
6 A' 1502 1452        
7 A' 1406 1359        
8 A' 1269 1227        
9 A' 1121 1084        
10 A' 936 904        
11 A' 795 769        
12 A' 411 397        
13 A" 3091 2989        
14 A" 1496 1447        
15 A" 1065 1030        
16 A" 798 771        
17 A" 620 600        
18 A" 210 203        

Unscaled Zero Point Vibrational Energy (zpe) 14413.9 cm-1
Scaled (by 0.9668) Zero Point Vibrational Energy (zpe) 13935.4 cm-1
See section III.C.1 List or set vibrational scaling factors to change the scale factors used here.
See section III.C.2 Calculate a vibrational scaling factor for a given set of molecules to determine the least squares best scaling factor.
Rotational Constants (cm-1) from geometry optimized at QCISD(T)/aug-cc-pVTZ
ABC
1.90219 0.31722 0.28636

See section I.F.4 to change rotational constant units
Geometric Data calculated at QCISD(T)/aug-cc-pVTZ

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.449 0.000
C2 1.312 0.330 0.000
C3 -0.982 -0.696 0.000
H4 -0.430 1.457 0.000
H5 2.165 0.993 0.000
H6 -0.462 -1.655 0.000
H7 -1.627 -0.648 0.882
H8 -1.627 -0.648 -0.882

Atom - Atom Distances (Å)
  C1 C2 C3 H4 H5 H6 H7 H8
C11.31751.50851.09532.23222.15432.15142.1514
C21.31752.51302.07471.08022.66223.22063.2206
C31.50852.51302.22213.57151.09071.09361.0936
H41.09532.07472.22212.63613.11162.57682.5768
H52.23221.08023.57152.63613.73004.22484.2248
H62.15432.66221.09073.11163.73001.77421.7742
H72.15143.22061.09362.57684.22481.77421.7637
H82.15143.22061.09362.57684.22481.77421.7637

picture of 1-propenyl radical state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 H5 136.942 C1 C3 H6 110.930
C1 C3 H7 110.528 C1 C3 H8 110.528
C2 C1 C3 125.414 C2 C1 H4 118.315
C3 C1 H4 116.271 H6 C3 H7 108.634
H6 C3 H8 108.634 H7 C3 H8 107.489
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability